The following data gives the information on the observed lifetimes (in hours) of 225 electrical components :
| Lifetimes (in hours) | 0 – 20 | 20 – 40 | 40 – 60 | 60 – 80 | 80 – 100 | 100 – 120 |
| Frequency | 10 | 35 | 52 | 61 | 38 | 29 |
Determine the modal lifetimes of the components.
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Ravi (2025-07-02 12:08:02)
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